Combination lock



V. G. ERICSON.

COMBINATION LOCK.

APPLICATION mp0 APR.2I, I921.

1,402,221, Patented Jan. 3, 1922..

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V. G. ERICSON.

COMBINATION LOCK.

APPLICATION FILED APR.21. 1921.

Patented Jan. 3, 1922.,

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VICTOR G. ERICSON, OF WAUKEGAN, ILLINOIS, ASSIGNOR T0 VICTOR LOCK WORKS, OF NORTH CHICAGO, ILLINOIS, A COMMON LAW TRUST.

COMBINATION LOCK.

Specification of Letters Patent.

Patented J an. 3, 1922.

To all whom it may concern:

Be it known that I, VIo'ron G. ERrcsoN, a citizen of the United States of America, and a resident of Waukegan, county of Lake, and State of Illinois, have invented certain new and useful Improvements in Combination Locks, of which the following is a specification.

This invention relates to combination locks suitable for all. the general uses of such devices. The object of the invention is to provide a combination lock the knob of which when the lock is applied to such devices as table or desk drawers will serve the combined functions of setting the permutation rings or tumblers operating the latch or bolt by motion in the direction of its axis, and also serve as a drawer pull or handle. j

A further object of the invention is to provide a combination lock which'can be manipulated merely by the sound or feel of moving parts when arriving at releasing position. This object of the invention is accomplished by placing the spring-released latchor bolt under the control of a longitudinally movable spindle attached to the knob of the lock.

The objects of the invention are accomplished by a device such as illustrated in the drawings, wherein- Fig. 1 is a plan view of a lock constructed according to this invention.

Fig 2 is a sectional view taken on the line 2-2 of Fig. 4:.

Fig. 3 is a. sectional view taken on the line 3-3 of Fig. 4:.

Fig. 4 is a transverse Vertical section of the lock showing the mal locking position.

F ig. 5 is a transverse vertical section showing the knob moved outwardly and the bolt released. 1

Fig. '6 is a horizontal sectional view taken on the line 66 of Fig. 4. 1 Fig. 7 is a detail in perspective of base plate of the lock.

Fig. 8 is a detail in perspective of'the bolt. The structure illustrated in the drawings comprises a base plate and a cylindrical casing for enclosing the movable elements of the lock. Centrally mounted in this casing with its head projecting therefrom is a spindle and knob whichis rotatable for the purpose of setting the permutation disks and is also movable to limited extend in an axial parts thereof in nor the direction for camming the bolt or latch into locking position or releasing it so that it may move to unlocking position under spring action. By means of this structure the spindle of the rotatable knob normally retains the bolt immovable in looking position and since no spring-operated elements normally engage the permutation rings, the setting of these rings by rotating the bolt will not become apparent by feeling or listening for any clicking action. When the lmob is drawn to its outer position it becomes ineffective for changing the setting of the permutation rings.

The structure as illustrated in the drawings comprises a base plate 1 having an up I standing slotted flange 2 through which the bolt or latch 3 projects. Mounted on the base plate 1 is a disk-shaped bearing element 4 having a central boss 5 for receiving the spindle 6 of the rotatable setting knob 7. The casing 8 through which the knob projects is secured to base plate 1 by bent lugs 9 passing through apertures in the base plate. The. outer surface of the boss 5 serves as a bearing for the permutation disks 10 and 11. These are spaced apart by a washer 12 which is prevented from rotating by a projection thereon fitting the spline 13 in boss 5. A similar washer 14L serves to prevent rotation of the ring 10 through surface friction with a similar ring 15 fast to the hub 16 of knob 7. The locking bolt 3 is guided in a slot 17 in the bearing member 4 and is provided with a lug 18 normally projecting into a recess 19 in the boss 5. The boss 5 is also at the locationof recess 19 provided with a radial recess 20 for receiving a spring 21 bearing against lug 18 on the bolt 3, urging thesame to unlocking position. Such movement of the bolt 3 is normally prevented by the spindle 6, which projects through an aperture 22 in the bolt. Such movement of the bolt 3 is also prevented by the inner surfaces of the permutation rings 10 and 11 but these rings have a recess 23 at one point on their inner edges to receive the 'lug 18 of bolt 3 when the same is permitted to move. to unlocking position. The fixed spacing washers 12 and 14 are similarly recessed.

The setting knob 7 is normally held in its inner position by! a spring 26L bearing between the inner surface of casing 8 and the surface of disk 15 rigid with the setting knob. A pin 25 on disk 15 coacts with a pin 26 on permutation ring 10 and this pin also coacts with a pin 27 on ring 11. The loca tion of the rings in the permutation rings with respect to the pins thereon determines what number on the dial 528 on casing 8 must be indicated by the pointer 29 for the re cesses in the rings to register with lug 18 on bolt 3. The pointer 29 is fixed to the settingtion indicated in Fig. 5 to that shown in Fig.

4 forces the bolt outwardly into locking position. When the setting knob is in its outer position spring 21 may force the locking bolt into releasing position but only when the recesses in the permutation rings, register with lug 18.

In operating the lock the setting knob 7 is rotated first in one direction and then in another, as usual with combination locks, until the recesses 23 in all the setting rings are aline'd with lug 18 on the bolt 3. Such motion can be imparted to the permutation rings only when the setting knob is in its inner position where pin-25 will coact with pin 26. Then when the knob is released and moves outwardly under the action of spring Qt, the bolt 3 is driven to unlocking position by the spring 21. To again set the mechanism in looking position it is only necessary to depress the setting knob 7 and thereby through engagement of the spindle 6 with the cam surface 80 on the bolt forcing the bolt to locking position. Then a rotation of the knob 7 rotates the permutation rings into position to retain the bolt 3 in its outer position by blocking inward motion thereof in the lug'18.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims. a

I claim:

1. A combination lock, comprising a supporting structure, a locking bolt slidably mounted in said structure, permutation elements for releasing or retaining said bolt in locking position, a rotatable setting knob for imparting movement to said permuta tion elements, said setting knob being also movable in an axial direction and actuating said bolt by its axial movement.

2. A combination lock, comprising a sup porting structure, a locking bolt slidably mounted therein, a spring for normally urgporting structure for motion at right angles to the axial motion of the setting knob, coacting cam surfaces on said locking bolt and setting knob, and permutation elements movable by rotation of the setting knob and controlling motion of the locking bolt.

4:. A combination lock, comprising a supporting structure, a setting knob mounted therein for rotation and axial movement, a locking bolt slidably mounted'in said supporting structure for motion at right angles to the axial motion of the setting knob, coacting cam surfaces on said locking bolt and setting knob, permutation elements movable by'rotation of the setting knob and controlling motion of the locking bolt, and a spring,"

for normally urging the locking bolt to unlocking position. I

5. A' combination lock, comprising a supporting structure, a plurality of'permuta' tion elements rotatably mounted on said structure, a settingknob rotatably mounted on said structure and arranged to coact with said permutation elements, saidsetting knob being axially movable into and outof'coacting relation with the permutation elements, and a locking bolt controlled by said permu tation elements, said locking boltbeing actu ated by the axial movement of said setting knob. r

6. A combination lock, comprising-a supporting structure, a plurality of permuta-' tion elements rotatably mounted on said structure, a setting knob rotatably mountedon said structure and arranged to coact with said permutation elements, said setting knob' being axially movable into and out of coacting relation with the permutation elements, a spring for normally urging the set ting knob into coacting relationship with the permutation elements, and a locking bolt controlled by said permutation elements,

said locking bolt being shifted to locking 12 position by the axial movement'ofsaid setting knob. 1

7. 'A combination lock comprising a support, a permutation ring rotatably mounted on said support and having a recess formed on its inner edge, a locking bolt slidably mounted on said support and having a part arranged for engagement with the inner edge of said ring and with said recess, and a rotatable setting knob 'for imparting move ment With said recess for retaining said bolt in unlocking position, and a rotatable set ting knob for imparting movement to said permutation ring, said setting knob being also movable in an axial direction to shift 15 said bolt into locking position out of engagement with said recess.

Signed at Waukegan this 18th day of April 1921.

VICTOR G. ERICSON. 

